Rosa willmottiae
Encyclopedia
Rosa willmottiae is a species in the genus Rosa
Rose
A rose is a woody perennial of the genus Rosa, within the family Rosaceae. There are over 100 species. They form a group of erect shrubs, and climbing or trailing plants, with stems that are often armed with sharp prickles. Flowers are large and showy, in colours ranging from white through yellows...

 in the plant family Rosaceae
Rosaceae
Rosaceae are a medium-sized family of flowering plants, including about 2830 species in 95 genera. The name is derived from the type genus Rosa. Among the largest genera are Alchemilla , Sorbus , Crataegus , Cotoneaster , and Rubus...

. It grows at an altitude of 2300–3150 m (7,545.9–10,334.6 ) in dry valleys in western Sichuan
Sichuan
' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...

, China. It forms an arching deciduous
Deciduous
Deciduous means "falling off at maturity" or "tending to fall off", and is typically used in reference to trees or shrubs that lose their leaves seasonally, and to the shedding of other plant structures such as petals after flowering or fruit when ripe...

 shrub 2 metre high, and as much across. The branches are covered in many straight prickles. The pinnate
Pinnate
Pinnate is a term used to describe feather-like or multi-divided features arising from both sides of a common axis in plant or animal structures, and comes from the Latin word pinna meaning "feather", "wing", or "fin". A similar term is pectinate, which refers to a comb-like arrangement of parts...

 leaves typically have 7 to 9 small bluish-green leaflets which emit a pleasant fragrance when bruised. It was introduced to western cultivation by Ernest Wilson
Ernest Henry Wilson
Ernest Henry "Chinese" Wilson , better known as E. H. Wilson, was a notable English plant collector who introduced a large range of about 2000 of Asian plant species to the West; some sixty bear his name.-Career:...

 in 1904 and was named after the collector and horticulturist Ellen Willmott
Ellen Willmott
Ellen Ann Willmott was an English horticulturalist. She was an influential member of the Royal Horticultural Society, and a recipient of the first Victoria Medal of Honour in 1897. She cultivated more than 100,000 species of plants, and sponsored expeditions to discover new species...

. The flowers are small (25–40 mm or 0.984251968503937–1.6 ), lilac-pink, and are borne on short laterals all along the length of the branches in late spring/early summer. The hips are small, becoming orange-red and losing their tips when ripe.

Quest-Ritson & Quest-Ritson describe R. willmottiae as "one of the few wild roses that merits a place in a mixed border or even as a specimen shrub" and that when in flower it is "the embodiment of beauty".
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